Why is Flushing Your Toilet So Noisy?

a flush toilet on wood floor

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If you have been living in your home for quite some time now, you probably have grown accustomed to the “normal” sounds you toilet makes when you use it. Yes, we mean that faint whooshing sound that water makes as you flush and that hissing sound that signals the refilling of the tank. When you hear those sounds, you are confident that your toilet is doing its job and at its best shape.


But when you hear a sound that is not one of those, you instantly get a little alarmed because you know something is not right.


To help you out, here are some types of noises that you should call your plumber for:


  • Whistling Sound

It’s a sound that is close to what your old tea kettle makes when you’re boiling water. While this sound is indicative of various plumbing problems, one primary cause would be excessive water pressure.

  • Gurgling Sound

This tells you what you have is a clogged toilet. When you hear a slap and splash kind of noise, it means the blockage is quite close to the surface and could probably resolved with your strategic use of a plunger.

The problem is worse if what you hear is a delayed gurgling sound that starts long after you have flushed your toilet. That indicates you have a blockage problem deep into your sewer line.

If there is no sign of any clogs in your sewer line, it could mean that what you have is a blocked vent. When dirt and other debris block your vent, they also prevent sewer gas from escaping and naturally this air would look for an alternative exit. So it may escape through your toilet. If you want water to smoothly flow again (which of course you do), then you definitely have to call a professional from Hayes Plumbing to help you out.

  • Humming Sound

When you flush your toilet and it refills the tank, you may hear a humming sort of sound accompanied by a little vibration. Often, a humming sound tells you that you have a worn diaphragm.


See, when water is pouring into your cistern, the diaphragm then redirects the water into the bowl. Every time you flush, the handle pulls on the chain that is attached to the frame. Because of the design of the frame, the water keeps a steady pressure and just builds up in the flush pipe then down into the bowl itself. Most diaphragms however, are made of plastic and could crack with time. When that happens, water pressure would drop and water would escape through the hole instead of going up the flush pipe. This causes that hum and vibration when you flush.


If you hear any of these sounds, the best course of action is to call your reliable plumber from Hayes Plumbing. We’ll make sure that when our work is done, all you’d hear again are the reassuring sounds that tell you everything is as it should be.

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